US3049513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ordered isocyanate-terminated polyether-based urethane compositions
Assignee: Wyandotte Chemicals Corp
•
Filing: 1959-03-26
•
Granted: 1962-08-14
•
Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Adolfas Damusis
- 👤 Kurt C Frisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:18
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4829; C08G18/08; C08G18/10; C08G18/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A NOVAL, ORDERED POLYEATHER-BASED NCO-TERMINATED URETHANE COMPOSITION PRODUCED BY FIRST MIXING AND REACTING ABOUT ONE MOLAR PROPORTION OF A POLYETHER POLYOL (A) WHICH IS A PROPYLENE OXIDE ADDITION PRODUCT OF A POLYHYDRIC LOWER-ALIPHATIC ALCOHOL HAVONG AT LEAST THREE AND NOT MORE THAN SIX HYDROXY GROUPS IN THE MOLECULE, SAID POLYOL HAVING ON AN AVERAGE AT LEAST ONE AND NOT MORE THAN FIVE PROPYLENE OXIDE UNITS PER HYDROXY GROUP, WITH ABOUT ONE MOLAR PROPORTION OF AN ARYLENE DIISOCYANATE (B) SELECTED FROM THE GROUP CONSISTING OF PHENYLENE DIISOCYANATE, TOLYLENE DIISOCYANATE, AND DIPHENYLMETHANE-4,4''-DIISOCYANATE, FOR EACH HYDROXY GROUP OF THE POLYETHER POLYOL (A), TO PRODUCE AN ISOCYANATAED-TERMINATED POLYETHER-BASED URETHANE INTERMEDIATE ADDUCT, AND THEN MIXING AND REACTING ABOUT TWO MOLAR PROPORTIONS OF THE THUS-PRODUCED ISOCYANATE-TERMINATED ADDUCT WITH ABOUT ONE MOLAR PROPORTION OF A POLY-PROPYLENEETHER GLYCOL (C) HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 134 AND 1000.
Claim 2
Dependent Claim
140 words
A NOVAL, ORDERED POLYEATHER-BASED NCO-TERMINATED URETHANE COMPOSITION PRODUCED BY FIRST MIXING AND REACTING ABOUT ONE MOLAR PROPORTION OF A POLYETHER POLYOL (A) WHICH IS A PROPYLENE OXIDE ADDITION PRODUCT OF A POLYHYDRIC LOWER-ALIPHATIC ALCOHOL HAVONG AT LEAST THREE AND NOT MORE THAN SIX HYDROXY GROUPS IN THE MOLECULE, SAID POLYOL HAVING ON AN AVERAGE AT LEAST ONE AND NOT MORE THAN FIVE PROPYLENE OXIDE UNITS PER HYDROXY GROUP, WITH ABOUT ONE MOLAR PROPORTION OF AN ARYLENE DIISOCYANATE (B) SELECTED FROM THE GROUP CONSISTING OF PHENYLENE DIISOCYANATE, TOLYLENE DIISOCYANATE, AND DIPHENYLMETHANE-4,4''-DIISOCYANATE, FOR EACH HYDROXY GROUP OF THE POLYETHER POLYOL (A), TO PRODUCE AN ISOCYANATAED-TERMINATED POLYETHER-BASED URETHANE INTERMEDIATE ADDUCT, AND THEN MIXING AND REACTING ABOUT TWO MOLAR PROPORTIONS OF THE THUS-PRODUCED ISOCYANATE-TERMINATED ADDUCT WITH ABOUT ONE MOLAR PROPORTION OF A POLY-PROPYLENEETHER GLYCOL (C) HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 134 AND 1000.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |